COMO CONSERTAR MICROONDAS QUE NAO LIGA?.ASSISTA ATÉ O FINAL. AULA - 01

Summary

In this tutorial, the host demonstrates how to troubleshoot and fix a microwave that isn't working. Starting with basic steps, like checking the power supply and testing for continuity, the video guides viewers through testing components like fuses and capacitors using a multimeter. The host emphasizes the importance of patience and careful examination, showing step-by-step how to replace a blown fuse to restore the microwave to working condition. With practical tips and a hands-on approach, the video provides valuable insights for DIY repairs on common microwave issues.

Takeaways

• 😀 The first step when troubleshooting a non-working microwave is to test the power source by plugging it into the outlet.
• 😀 If the microwave shows no signs of life, it’s essential to open the appliance and start testing key components.
• 😀 Always start with checking the fuse, as it is often the cause of power issues in microwaves.
• 😀 Use a multimeter to check for continuity in the fuse. If there is no continuity, it likely means the fuse is blown.
• 😀 If the fuse is blown, replace it with a new one to potentially fix the issue.
• 😀 Be sure to remove all screws when opening the microwave, paying attention to both the back and sides of the unit.
• 😀 When replacing the fuse, ensure you use a new one that matches the specifications of the old one.
• 😀 After replacing the fuse, test the microwave by plugging it back in to see if it powers up.
• 😀 If the microwave powers on after replacing the fuse, the issue is likely resolved, and you can close the microwave back up.
• 😀 Always be cautious when handling electrical components and make sure to discharge the capacitor before testing it to avoid electric shocks.
• 😀 If the problem was just a blown fuse, there's no need for drastic repairs like replacing the board or magnetron; a simple fuse swap could solve the problem.

Q & A

What is the first step to troubleshoot a microwave that doesn't turn on?

The first step is to plug the microwave into a power outlet and check if it responds. In this case, the microwave did not power on, nor did the LED light up.

What should be tested first when a microwave doesn't turn on?

The first thing to test is the fuse. Microwaves typically have a high-voltage and low-voltage fuse, and testing these fuses can help determine if they are preventing the microwave from working.

How do you safely open a microwave to begin troubleshooting?

To open the microwave, unplug it, then unscrew the screws from both sides and the back of the unit. Once the screws are removed, gently lift the back panel to access the internal components.

What tool is recommended to test components in the microwave?

A multimeter is recommended to test the components like fuses, capacitors, and wires. You should use the continuity setting on the multimeter to check for any broken circuits.

What does the multimeter's 'continuity' setting do?

The continuity setting on a multimeter allows you to check if electrical current can pass through a circuit. It will emit a sound if there is continuity, indicating that the circuit is complete.

Why is it important to test the power cord and plug before checking internal components?

Testing the power cord and plug is crucial because sometimes the issue can be as simple as a damaged power cord or plug, which could prevent the microwave from receiving power.

What should you do if the fuse doesn't show continuity when tested?

If the fuse does not show continuity, it indicates that the fuse is blown, and it needs to be replaced in order for the microwave to function properly.

How do you safely handle and test a capacitor in the microwave?

Before testing the capacitor, it should be safely discharged using a tool like a screwdriver or the tip of a multimeter. This is important because capacitors can store a dangerous amount of energy even when the microwave is unplugged.

What is the role of the capacitor in a microwave?

The capacitor in a microwave helps store and release energy, particularly to power the magnetron, which generates microwaves. If the capacitor is faulty, the microwave may not heat properly or may not turn on.

How can you confirm that the problem with the microwave is fixed after replacing the fuse?

After replacing the fuse, plug the microwave back in and check if it powers on. If the microwave starts functioning again, the problem was likely with the blown fuse.